diff --git a/Casks/clipmenu.rb b/Casks/clipmenu.rb
index 389c743c8ce..c67db76a878 100644
--- a/Casks/clipmenu.rb
+++ b/Casks/clipmenu.rb
@@ -4,7 +4,8 @@ class Clipmenu < Cask
 
   # dropbox is the official download host per the vendor homepage
   url "https://dl.dropbox.com/u/1140644/clipmenu/ClipMenu_#{version}.dmg"
-  appcast 'http://feeds.feedburner.com/clipmenu-appcast'
+  appcast 'http://feeds.feedburner.com/clipmenu-appcast',
+          :sha256 => 'e9f9df0e48aad4e00b8df26fd622f42a0218f5be662b6d2ee496664c5f45b4a3'
   homepage 'http://www.clipmenu.com/'
   license :unknown